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Sewing Machine
NX600
Brother NX600 User Manual
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Repair Manual
202
204
Table of Contents
Table of Contents
4
Outline of Mechanism
3
Main Mechanisms
3
Positions of Electronic Components
3
Control System Block Diagram
3
Operation of Other Electronic Components
3
Table of Contents
4
Main Mechanisms
12
Driveline
13
Positions of Electronic Components
14
Control System Block Diagram
15
Main Motor Control
16
Thread Cutter
17
Operation of Other Electronic Components
18
Using the Threader
19
2 Disassembly
21
Main Unit Main Parts
23
Electrical Parts and Motors
30
Thread Tension Mechanism
37
Thread Guide Cover Removal
38
PF-F SW Assy. Removal
39
Plate Assembly Removal
40
Tension Disk Removal
41
Bobbin Winder Mechanism
42
Bobbin Winder Mechanism
43
Bobbin Winder Cover Removal
43
Bobbin Winder Mechanism
44
BW Shaft Holder Assembly Removal
45
Rotary Hook Drive Mechanism
46
Cutter Assy. Location Diagram
47
Leadline Guide Holder Removal
47
Joint Removal
48
Needle Bar, Presser Mechanism
49
Upper Shaft Mechanism
50
Upper Shaft Removal
50
Needle-Presser Module Removal
51
Plate Spring Removal
52
Needle-Presser Module
53
Modules Needle-Presser Module
54
BH Switch Assy. Removal
54
Spring-Z Removal
55
Lock Nut Removal
56
Needle Bar Assy. Disassembly
57
Needle Bar Supporter Assy. Removal
58
Lever AB Assy. Disassembly
59
Thread Take-Up Counter Weight Removal
60
Thread Release Lever Assy. Removal
61
Presser Bar Removal
62
Presser Dial Gear Removal
63
Feed and Bobbin Module
64
Feed and Bobbin Module
65
Needle Plate a Removal
65
F Pulse Motor Assembly Removal
66
Feed Bar Spring Removal
67
Lower Shaft B Assy. Removal
68
Feed Arm Assy. Removal
69
Feed Adjuster Assembly Removal
70
Drop Assy. Removal
71
Thread Cutter Module
72
Thread Cutter Module
73
Thread Cutter Frame Assy. Removal
73
Thread Hook Assy. Disassembly
74
Thread Cutter Lever Assy. Disassembly
75
3 Assembly
77
Needle Bar, Presser Mechanism / Upper Shaft Mechanism
78
Plate Spring Attachment
79
Needle-Presser Module Attachment
80
Main Unit Needle Bar, Presser Mechanism / Upper Shaft Mechanism
81
Pulley Attachment
81
Connecting the Needle-Presser Module and Upper Shaft
82
Rotary Hook Drive Mechanism / Feed and Bobbin Mechanism /Cutter Assy
83
Timing Pulley D Attachment
84
Lower Shaft a Attachment
85
Feed Module Attachment
86
Thread Cutter Module Attachment
87
Bobbin Winder Mechanism
88
Bobbin Winder Mechanism
89
Bobbin Winder Shaft Stopper (Bobbin Winder Assembly Holder) Assembly
89
BW Holder Supporter Attachment
90
Bobbin Winder Cover Attachment
91
Thread Tension Mechanism
92
Thread Tension Mechanism
93
Thread Take up Spring Attachment
94
Tension Disk Attachment
95
Thread Tension Gear Attachment
96
Tension Releaser Link Attachment
97
Thread Release Holder Assy. Attachment
98
Thread Guide Cover Assembly
99
Electrical Parts and Motors
100
Electrical Parts and Motors
101
NP PCB Assy. Attachment
101
Side Feed Mechanism Assembly
102
Side Feed Mechanism Attachment
103
Motor Fan Attachment
104
Base Plate Attachment
105
Electrical Parts and Motors
106
Lead Assy. Processing
107
Main PCB Assy Connector Connection (Lower)
108
Main Parts
109
Main Parts
110
Handle Assembly and Attachment
110
Front Cover Assembly (SS-VR F PCB Assy. Attachment)
111
Front Cover Assembly (Spool Pin Attachment)
112
Front Cover Attachment
114
Top Cover Attachment
115
Face Plate Assembly
116
Needle-Presser Module
117
Shaft Bushing Assembly Attachment
118
Presser Bar Attachment
119
Modules Needle-Presser Module
120
Shaft Attachment
120
Z Pulse Motor Attachment
121
Z Zigzag Lever Assy. Attachment
122
Thread Take-Up Lever Assy. Attachment
123
Presser Foot Lifter Attachment
124
Threader Hook Assy. Attachment
125
Thread Guide Plate Attachment
126
Lever AB Assy. Attachment
127
Lever a Spring Attachment
128
Needle Bar Assembly
129
Needle Bar Assembly Attachment
130
Lock Nut Attachment
131
Spring (for Needle Bar Supporter Assy.) Attachment
132
Presser Dial Attachment
133
Zigzag Adjusting Nut Attachment
134
Adjusting Plate Assy. Attachment
135
Feed Module
136
Feed Module
137
Drop Knob Attachment
137
Drop Assy. Attachment
138
Feed Adjuster Assembly Attachment
139
Assembling the Feed Arm Assy
140
Feed Arm Assembly Attachment
141
Assembling the Lower Shaft B Assy
142
Lower Shaft B Assy. Attachment
143
Grease Applications
144
Feed Bar Attachment
145
Outer Rotary Hook Assy. Attachment
146
FPM Holder Assy. Attachment
147
F Gear Teeth Alignment
148
Spring Attachment (for FPM Holder Assy.)
149
Thread Cutter Module
150
Thread Cutter Module
151
C Pulse Motor Attachment
151
Assembling the Thread Cutter Lever Assy
152
Assembling the Thread Hook Assy
153
Grease Applications
154
4 Adjustment
155
Needle Curvature
156
Tip Damage to Needle
157
Test Mode
158
Timing Belt Tension Adjustment
160
Motor Belt Tension Adjustment
161
Needle Bar Rise Adjustment
162
Needle Bar Height Adjustment
163
Three Point Needle Drop Adjustment
164
Needle Interference Left/Right Adjustment
165
Clearance between the Needle and the Rotary Hook Point Adjustment
166
Presser Bar Height and Parallel Adjustment
167
Upper Thread Tension Adjustment
168
Fine Tension Adjustment
169
Inner Rotary Hook (Lower Thread) Tension Adjustment
170
Feed Adjustment
171
Bobbin Winder (Uneven Bobbin Winding and Bobbin Winding Amounts) Adjustment
172
BH Lever Switch Position Adjustment
173
Forward and Back Adjustment of Needle and Presser
174
Knee Lifter Adjustment
175
Side Feed Line Adjustment
176
One-Point Pattern Adjustment
177
Left and Right Feed Dog Position Adjustment
178
Release Adjustment
179
Front/Back, Left/Right Position of Feed Dog Adjustment
180
Feed Dog Height Adjustment
181
Inner Rotary Hook Bracket Position Adjustment
182
Adjust the Needle Thread Block
183
5 Failure Investigation
185
Failure Investigation for Electronic Parts
185
Power Does Not Come on
186
Pulse Motors Do Not Return to Starting Point
187
Starting Point
187
Pattern Cannot be Selected
188
Main Motor Does Not Turn
189
Main Motor Does Not Turn
190
Main Motor Rotation Abnormal
191
Cannot Sew Pattern Well
192
Cannot Sew Button Holes Well
193
Stitch Length and Zigzag Width Cannot be Done by Manual Adjustment
194
Failure Investigation for Electronic Parts
194
Problems with Vertical Needle Movement and Reverse Stitching
195
Does Not Operate When the Foot Controller Is Used
196
Thread Tensioning Does Not Go Well
197
Thread Cutter Does Not Work Normally
198
LCD Display Is Not Normal
199
LCD Light Does Not Come on
200
Bobbin Winding Cannot be Done
201
The Lamp at Hand Does Not Have Light
202
Repair Manual
203
4
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Brother NX600 Specifications
General
Maximum Stitch Width
7 mm
Maximum Stitch Length
5 mm
LCD Display
Yes
Automatic Needle Threading
Yes
Drop Feed
Yes
Speed Control
Yes
Built-in Memory
No
USB Port
No
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